class Person {
  constructor(name, age) {
    this.name = name
    this.age = age
  }
  
  static staticMethod() {
  }
  
  eating() {
  }
}

class Student extends Person {
  constructor(name, age, address) {
    super(name, age)
    this.adress = address
  }
  
  studying() {
  }
}

// console.log(Object.getOwnPropertyDescriptors(Student))
// console.log(Object.getOwnPropertyDescriptors(Student.prototype))
var stu = new Student()
console.log(stu)
console.log(stu.__proto__.__proto__)
console.log(Object.getOwnPropertyDescriptors(Student))

